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Mathematics, 29.09.2020 08:01 galaalexa

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Item 7
Raul is selling coupon books. He started with 50 coupon books and has already won a prize for selling at least 10 coupon books. The total amount of money Raul will make from selling x coupon books is represented by a function.

f(x)=20x

What is the practical domain of the function?

all integers from 0 to 50, inclusive

all real numbers

all integers from 10 to 50, inclusive

all multiples of 20 between 0 and 1000, inclusive

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